| start =
Caution is necessary for at least four weeks.
* '''Day 1-8:''' wash-out period. * '''Day 8:''' start administration of amitriptyline in a low dosage of 25 mg/day* . * '''Day 1514:''' if necessary, increase dosage of amitriptyline to 50-150 mg/day.* '''Day 28:''' gradually increase dosage of amitriptyline.
| info =
* Fluoxetine slows the metabolism of amitriptyline via CYP2D6.
* Start low, go slow for amitriptyline.{{theorSS}} }}